Folding carton



Dec. 25, 1951 w, sAlDEL 2,579,760

' FOLDING CARTON Filed March 1 8, 1949 3 Sheets-Sheet l 31 55 if 25 2 g39 4 5 III 39a "nl l JO II 27 I I I ",1 16 24 III I y/ I W. R. SAIDELFOLDING CARTON Dec. 25, 1951 5 Sheets-Sheet 2 Filed March 18, 1949 if Ew. R. SAIDEL FOLDING CARTON Dec. 25, 1951 Filed March 18, 1949 '3Sheets-Sheet 5 Patented Dec. 25, 1951 UNITED STATES PATENT OFFICEClaims.

This invention relates to improvements in folding cartons and itconsists of the matters hereinillustrated and described and moreparticularly pointed out in the appended claims.

One of the objects of the invention is to provide a cartonwhich can beproduced from a one piece paper board blank, out and scored to form thebottom, the top and the two, sides of the carton and which blank may beeasily manipulated from its flat folded condition to its set upcondition and wherein parts of the top are turned downwardly intoperpendicular positions to form the ends and transverse partitions thatdivide the carton into side by side commodity receiving compartments.

Another object of the invention is to. provide a carton of this kind inwhich there is no waste of the paper board of which it is-made and inwhich the commodity is advantageously displayed to view from not onlythe entire top of the carton but also from parts of the sides therefor.

A further object oi the invention is to provide a, carton of this kindwhich; when filled and stacked, the one upon the other, ably withstandsthe loadv pressure of the cartons above without crushing and withoutdamage to commodities within the compartments of the cartons.

Also it is an objectof the invention to provide, in a carton of thiskind, a novel arrangement of parts for the bottom and for at least theends of the carton; and wherein the end of the cartons are held againstdisplacement by certain of said parts of the, bottom when the carton isin its setup condition ready to receive the commodity in thecompartments thereof.

Again it is an object of the invention to pro vide. a transverselypartitioned carton with side by side compartments which can, be producedwith a considerable saving in paper board and labor over that requiredfor similar cartons as heretofore devised andwitha corresponding reduc nhe cost of manufactur t out,

sacr fi e. i the st en th 0.1 th ca to Figs, 3 and 4 are transversevertical sectional views through the carton as taken on the lines 3.3and 4-4 respectively of Fig. 2 and on a scale enlarged over thatof Fig.2.

Fig. 5 is a top plan view of the carton in its folded condition, knownas a sleeve.

Fig. 6 is. an end view of the carton when m the folded sleeve conditionof Fig. 5, the dot and dash lines indicating its open condition.

Fig. 7 is a bottom plan view of the carton when in its folded sleevecondition.

Fig. 8 is a plan view of a one-piece cut and scored paper board blank,from which the improved carton is made.

Fig. 9 is a fragmentary detail perspective view on an enlarged scale ofparts of the carton toward oneend. thereof when in the set-up conditionof Fig. 1 and which will be more fully referred to later.

Fig; 10 is a fragmentary vertical sectional view through parts of thecarton appearing in Fig. 9, as taken on the line Ill-I 0 thereof.

Fig. 11 is a detail view in elevation, on an enlarged scale, of aportion of the blank of Fig. 8 within the dash and dot line rectangle Ila thereon and more clearly shows certain nicks at the intersections ofsome of the cut lines and scored lines in the blank, and which will bementioned in more detail later.

In generalthe improved folding carton is made from a one piece out andscored blank of paper board such as free bending chip board, bleachedmanila board, lined board, patent coated board, laminated board stockwith grease proof sheeting or the like.

Such a blank, which is of generally rectan ular shape, includeslaterally spaced parallel score lines which extend in one direction ofthe blank to divide the blank into panels, which form the sides, the topand the bottom of the carton when in partly set up condition. The midpanel and parts of the side panels are cut and scored into sectionswhich when turned downwardly into a perpendicular position, form bothends for and one or more partitions in the fully set up. carton thativide the same into side by side commodity receiving compartments.

Referring now in detail to that embodiment of the invention illustratedin the drawings, Fig. 8 shows the blank irom which a carton such asshown in Fig. 1 is made.

Said blank is substantially rectangular in shape and it is provided witha pair of cut-scored lines lgfland I l respectively and spaced equaldistances inwardly from and parallel with said lines are other outthrough lines I2, and I3, and score lines I2a and I3a respectively. Thatpart of the blank between the lines I2, IM and I3, I3a respectivelyforms a mid panel I4, which'ultimately becomes the open top of thecarton, those parts of the blank between the lines I6 and I2, I2a andbetween the lines II and I3, I3a form the two side panels I5-I5 of thecarton and those parts of the blank outwardly of the lines I and II formtwo end panels I6 and I1 respectively that make up the bottom of thecarton.

The mid panel I4 is out transversely along lines I8, I8zc, I9, 20 and ZIrespectively. The lines I8, I850, 20 and 2I terminate substantially atthe cut and scored lines I2, He and l3, I3a while the line I3 extendsbeyond said lastmentione'd lines as appears in Fig. 8, except for aslight interruption for a purpose hereinafter mentioned. It is pointedout that the cut lines mentioned do not actually meet or cross the cutand scored lines I2, I2a and I3, I31; respectively, but stop shortthereof to leave portions I21: and I3ac respectively, known as nicks andby which parts adjacent said-lines are held together againstdisplacement while the blank is being folded by machine into sleeveform, as will be later mentioned, and at which time said nicks readilybreak at least partwaythrough. In Fig. 11, the nicks I30: are indicatedby dotted line circles, better to illustrate their presence, but it isto be understood that such circles are not present upon the blank. Whilethese nicks are desirable and helpful, they may be omitted, in whichevent the lines would actually meet. But with the fnick present, thereis less danger of the parts opening up prematurely Whilst the boxstructure is in the process of manufacture. The mid panel I4 is providedwith transverse lines 22 and 23 of longitudinally spaced perforationswhich facilitate bending of the parts upon opposite sides thereof intoright angled relation. These lines of perforations terminate at thelines I2, I211 and I3, I3a. The cut and scored lines mentioned dividethe center panel of the 7 blank into two end sections 24 and 25 andintermediate sections 26, 21, 28, 28a and 29 respectively which, in theset-up carton, form the two ends and five partitions for the carton, asbest appears in Fig. 1. The end sections 24 and 25, along with theintermediate sections 26, 21 and 29, have flange-like tabs 24a, 25a,26a, 21a and 29a respectively, joined thereto by the transverse scorelines 34 and 35 respectively, joined to the said sections by the scoredlines Hat and I3a. The wing extensions mentioned, which are partiallycut from the panels l5, I5, are of generally triangular shape, withtruncated tops, the bases being considered as formed by the score linesI2a and I3c respectively.

By this arrangement of sections 36 to 35 inclusive, there are definedbetween them, triangularly shaped portions 38, the apexes of whichterminate substantially in the planes of the lines I2, I2a and I3, I 3arespectively. In the finished carton these portions 38 are disposed atthetop of the side walls thereof as formed by the panels I and I6 andeach portion 38 has a score line 39 about midway the apex and the basethereof, the

purpose of which will appear later. It is pointed out that at each endof the panels I5 and E6 are portions 380. arranged in line with but ofhalf the size and shape of the portions 38. Said'portions 38a are formedwith score lines 3911 similar to and in line with the score lines 39 andthe purpose of said score lines 33 and 36a is to afford an outwardexpansion of the panels I5-I 5.

In each of the wing extensions 36, 3 I, 32, 33 and 35 are short lines oflongitudinally spaced perforations 22a, 22a, 22a and 23a, 23arespectively that are parallel with but offset from the associated linesof spaced perforations 22 and 23'by an amount slightly more than thethickness of the stock of the blank and thus there is defined in each ofthese extensions a triangular tab 46.

The panels I6 and H of the blank are each of a width greater thanone-half the width of the mid panel section I4. Parts of the free marginof the panel I6 are cutaway to provide longitudinally spaced tabs 45 andparts of the free margin of the panel H are cut away to form recesses 42which are disposed in alignment with and are the same in area as thetabs 4!. One of the lateral edges of these recesses 46 form stopshoulders for engagement by the edges of the flange 24a, 25a, 26a, 27aand 29a when the blank is set up into the carton form, as in Fig. 1.With the arrangement of the tabs 4| and recesses 42, as shown in Fig. 8and asbefore described, the tabs on the panel I6 are formed from thoseparts of the paper board strip from which the blank is made, out fromthe panel I! to form said recesses 42. Thus, there is no waste of stockin" the production of successive blanks from a strip of paper boardstock. I

On that face of the free margin of the panel I6, which is the inner facein the set-up box, is a band of adhesive outwardly of the dash and dotline 43 (see Fig. 8) and this band of adhesive also covers thecorresponding side of the tabs 4 I.

In Figs. 5, 6 and 7 are shown top, end and bottom views of the blank ofFig. 8 when folded into its collapsed or knocked-down sleeve conditionand in which condition they will stack flatwise for shipment andstorage. To bring the blank to this condition, the panel I! is foldedalong the line II into overlapping relation upon the center panel andthen the panel I6 is folded over upon the panel I! and united thereto bythe adhesive, before mentioned. The blank is then in its flat folded orsleeve condition, as shown in Figs. 5, 6 and 7. This folding of theblank into sleeve form is performed by a blank folding machine and it isin this folding operation that the nicks I29: and I39: are broken atleast partway through on the folded side after being mechanically fedfrom the hopper of said machine, at which time said nicks have servedtheir purpose. Considering the blank in this flat folded condition withthe panels I4 and I5 facing upwardly, as in Figs. 5 and 6, this disposesthe scored lines I2 and II at opposite edges of the flat folded blank,as in Fig. 6. 7

To manually open up the flat folded blank of Figs. 5, 6 and 7, it isonly necessary to grasp the side edges thereof as now defined by linesII and I2, between the fingers, and exert inward pressure on said edgesas in Fig. 6, whereupon the blank opens up into the extended positionshown in dot and dash lines in Fig. 6, the upward swing of the panels inthis operation being indicated by the arcuate arrows of Fig. 6. It is inthis part of the hand operation of setting up-the'sleeve inside surfacesof the side walls ll5.

'5 thatthe remaining parto'r the nicks:are broken throughcompletelyi'rom "their other side.

"When the carton hasbeen thus farset up and 'it isdesiredto complete thesame by hand operations, the various sections are manipulated to disposethem in the partition forming arrangement shown in Figs. 1 and 2. As themanipulation for each of said sections is generally the "same, adetailed description of the manipulation of one will sufiice for all andin this instance the section 26 is chosen as an example.

Start by placing the thumbs in the sleeve and toward the bottom thereof,bearing against the Then press the walls'slightly outward. This causesan inward bendingalong lines 39 so that the triangular'apex portions ofthe parts 38 point inwardlyand approach toward the horizontal. Due tothis action the tabs 32, which are connected to the apex portions alongthe lines 31 swing upwardly and outwardly, thus exending beyond the'bottom part of the side walls. With the parts inposition, downwardfinger pressure is imposed walls |5-l5 and the tabs All-40 willhave'been disposed on top orthe flange 26a, as best shown in Fig. 9. Thescore lines 22a are oflse't from the score line 221:0 facilitate thedisposition of the tabs 4|] on top of the flange 26a, as just described.

When said section 26 is in its upright position,

its flange 26a will engage flatwise upon the bottom (as formed bythepanels I6 and IT) and a part of the free edge of said flange is engagedwith one of the lateral edges of an associated recess 42 in the panel11. Thus an end portion ofthe flange 26a will engage directly upon apart of the panel I6 and the other end portion of the flange will engagedirectly upon a part of the panel [1. A part of this flange between saidend portions in the manipulation mentioned will assume an inclinedposition. thus permitting the end portions to lie in diiierent levelswherein the intermediate part of the edge of said flan e will abut thelateral shoulder formed by an edge of the associated recess 42.

This arrangement or location of the parts are best shown with respect tothe flange24a of the end section 24 in Fig. 9.

The sections 24, 25, '21 and 29 are manipulated in the same way as thatdescribed in connection with the section 25, the sections 24 and 25 torming the ends of the carton.

It will be understood that in manipulating sections 24, 26, 2'1 and oneof the sections 28a,- the operator will hold the sleeve with the section24 nearest to him. By first manipulating section 24, the other sections26, 2'! and one of the sections 28a can be taken in order, since thethumbs of the operator can be inserted from above through open spacebetween the first completely manipulated section and the next adjacentbut so that the section 25 is closest to'the operator.

This permits manipulation in the manner before described.

As the sections 24 and 25 are swung downward- 1y along the fold lines31, the portion 38a will bend automaticallyalong the fold orscore lines39a. By the provision of the fold or score lines 39, 39a, it has beenfound that either in the setting up of the sleeve into carton form byhand or by semiautomatic machines employing jigs, said score lines areindeed practical in affording a uniform outward expanding of the sidesof the set up carton.

In the manipulation of parts 28a-28a oi the section 28, they swingdownwardly in opposite directions and as each part 28a is of a widthless than the depth of the carton, the bottom edges of said parts willbe disposed above the bottom of the carton, as appears in Figs. 1 and 2.

It is to be noted especially from Figs. 2 and 9 that the extensions 30to 35 inclusive provide a double thickness of paper board for eachsidewall and in connection with the respective sections 24 to 29inclusively, tie said double thicknesses of paper board together, thusproducing along each side, parts of angle bars cross section capable ofwithstanding heavy vertical compression loads without yielding orbuckling.

Thus, the filled cartons when stacked, one upon the other, will amplyprotect the contents of the carton without damage due to the weight ofthe filled cartons above.

When the carton is in its completely set-up condition, as appears inFig. 1, the spaces in the side walls left by the wing extensions 30 to35 inclusive are symmetrically spaced apart and adjacent spaces areseparated by symmetrical parts as formed by the triangular portions 38of said side walls. 7

It is pointed out that in the completely setup cartons, parts of theseportions 38 adjacent the fold lines 39 protrude or bulge slightlyoutwardly from the remainder of the side wall and do not lie fiatagainst the portions 30 to 35 inelusive. Thus said parts of saidportions act as cushions to absorb lateral shock for adjacent cartons oneach side thereof and this aiiords further protection for the contentsof the carton, which contents are often in themselves of an easilybroken or damaged character.

It will also be noted that an edge of each tab 40 engages the verticalface of the adjacent full section. This aids in strengthening thestructure.

Cartons of this kind, when containing the desired commodities, aregenerally wrapped in a transparent film-like sheeting and when the im- Acarton made in accordance with the above may be produced from a blankwhich does not require a waste of the stock of which the blank isformed. In its set-up conditiomas shown in Fig. 1, the partitionsmaterially strengthen'the carton and permit a stacking of the filledcartons, one upon the other, in a manner withstanding considerable loadpressure of the filled cartons above, thus permitting stacking.

The partitions mentioned also serve the purpose of holding the two sidesof the completed carton perpendicularly to the bottom and againstbellying or bowing outwardly before wrapping the filled carton. in apaper sheet or the like. Thus the necessity of tying a string or cordauvaveo around the filled'carton beiore wrapping the same is eliminated.Assaid partitions are integral parts of the carton itself and are joinedor connected to the sides of the carton in the manner described, theyafiord a full visibility to each compartment between said partitions. VV Portions of the cut lines 36 are disposed at an angle of forty-fivedegrees to parts forming the top edges of the-sides of the carton. Thispermits and facilitates folding of the end and partition members orsections from the horizontal position which they occupy when the cartonis in the partly assembled form shown by dot and dash lines in Fig. 6 tothe completed form in which the end and partition members or sectionsare vertically disposed.

While in describing the invention, I have referred in detail to form,construction and arrangement of the various parts of the carton, the

same is to be considered only in its illustrative sense and therefore Ido not wish to be limited thereto except as may be specifically setforth in the appended claims.

I claim as my invention:

l. A blank for a carton of the kind described embodying therein arectangular piece of paper board material including a central panel, apanel at each side of and joined to the central panel by a cut andscored line and at least a fourth panel joined to one of the side panelsby a scored line, said central panel having transverse cut and scoredlines terminating at said first mentioned cut and scored lines anddividing the same into sections, each having truncated triangular fullwidth wings at their ends cut from each side panel and foldably joinedthereto by parts of said out and scored lines between said central andsaid side panels, each wing havingconverging side edges, parts of eachof said wings being joined to parts of each side panel by scored linesincluded in one side edge of each wing.

2. A blank for a carton of the kind described embodying therein arectangular piece of paper board material formed to provide a centralpanel, a panel at each side of and joined to said central panel by foldlines and a fourth panel joined to at least one of said side panels, theopposite ends of all of said panels providing continuous straight lineedges for opposite ends of the blank, said central panel being dividedtransversely into end and intermediate sections, the opposite end edgesof said end sections being coincident with and forming parts of the endedges of the blank, each end and intermediate sections having truncatedtriangular wings at their opposite sides, each cut from an associatedside panel and each joined at its base thereto along said firstmentioned fold lines and having oppositely inwardly angled side edgesand a free end edge parallel with the base thereof, a part of at leastone angled edge of each wing being joined to the associated side panelby a fold line beginning at thefirst mentioned line and terminatingshort of the free edge of said wing.

I 3. A blank for a carton of the kind described embodying therein arectangular piece of paperof said end sections being coincident with andforming parts of the end edges of the blank, each end and intermediatesections having truncated triangular wings at their opposite sides, eachcut from an associated side panel and each joined at its base theretoalong said first mentioned fold lines and having oppositely inwardlyangled side edges and a free end edge parallel with the base thereof,japart of at least one angled edge of each wing beingjoined to theassociated side panel by a fold line beginning at the first mentionedline and terminating short of the free edge of said wing, and a scoreline in each part of each side panel and arranged parallel with thefirst mentioned fold line and extending between the oppositely anglededges of adjacent wings.

4. A blank for a carton of the kind described embodying therein arectangular piece of paperboard material formed to provide a centralpanel, a panel at each side of and joined to said central panel by foldlines and a fourth panel joined to at least one of said side panels, theopposite ends of all of said panels providing continuous straight lineedges for opposite ends of the blank, said central panel being dividedtransversely into end and intermediate sections, the opposite end edgesof said end sections being coincident with and forming parts of the endedges of the blank, each end and intermediate sections having truncatedtriangular wings at their opposite sides, each cut from an associatedside panel and each joined at its base thereto alongsaid first mentionedfold lines and having oppositely inwardly angled side edges and a freeend edge parallel with the. base thereof, a part of at least one anglededge of each wing being joined to the associated side panel by a foldline beginning at the first mentioned line and terminating short of thefree edge of said wing, and a score line in each part of each side paneland arranged parallel with the first mentioned fold line and extendingbetween the oppositely angled edges of adjacent Wingsin the plane of theouter end of that part of said fold line in said side panel that joinsthe wing to said side panel.

5. A blank for a carton of the kind described embodying therein arectangular piece of paper board material formed to provide a centralpanel, a panel at each side of and joined to said central panel by foldlines and a fourth panel joined to at least one of said side panels, theopposite ends of all of said panels providing continuous straight lineedges for opposite ends of the blank, said cen tral panel being dividedtransversely into end and intermediate sections, the opposite end edgesof said end sections being coincident with and forming parts of the endedges of the blank, each end and intermediate sections having truncatedtriangular Wings at their opposite sides, each cut from an associatedend panel and each joined at its base thereto along said first mentionedfold lines andhaving oppositely inwardly angled side edges and a freeend edge parallel with the base thereof, a part of at least one anglededge of each wing beingv joined to the associated side panel by a foldline beginning at the first mentioned line and terminating short of thefree edge of said wing, at least certain of saidsections includinga foldline, the ends of which terminate at said first mentioned fold lines andprovide bendable i flanges for the associated section, each wing of ofthe first mentioned fold ends in line with and of a length approximatingthe width of said bend- Number able flange. 1,794,125 WILLIAM R. SAIDEL.1,836,100 2,076,844 REFERENCES CITED 5 2,321,209 The followingreferences are of record in the 2,389,222 file of this patent: 2,527,702

UNITED STATES PATENTS Number Name Date Number 1,686,521 Harrison Oct. 9,1928 323,350 1,733,663 Hale Oct. 29, 1929 Name Date Sugerman Feb. 24,1931 McWilliams Dec. 15, 1931 Holmes Apr. 13, 1937 Holwick June 8, 1943Walsh Nov. 20, 1945 Buttery Oct. 31, 1950 FOREIGN PATENTS Country DateGreat Britain Jan. 2, 1930

